某企业网络管理员发现数据备份速率突然变慢，初步检查发现备份服务器和接入交换机的接口速率均显示为百兆，而该连接两端的接口均为千兆以太网接口，且接口速率采用自协商模式。排除该故障的方法中不包括（ ）。
- A.检查设备线缆
- B.检查设备配置
- C.重启设备端口
- D.重启交换机
正确答案及解析
正确答案
解析
有关自动协商的大多数问题是由于有一方没有工作在自动协商方式。一般是由于线缆故障或端口故障或者设备配置问题。
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